Loose-leaf book.



, No. 883,154. PATENTED MAR. 24, 1908 A. WATTERS.

LOOSE LEAF BOOK.

APPLIOATION FILED mm. 19, 1906.

y EMA A I UNITED STATES PATENT OFFICE.

ALEXANDER W ATTERS, OF CHICAGO, ILLINOIS.

LoosE-LEAF BOOK.

L Application filed December 19, 1906. Serial No. 348,543.

Te all whom it may concerm Belt known that I, ALEXANDER WATrEns,a-resident of Chica o, in the county of Cook .and State of Illinois,have invented certain a The invention relates to loose-leaf books or newand useful Improvements in Loose-Leaf Books, of which the following is afull, clear, and exact description.

binders, such as are commonly employed for ledgers or c ther books.

The invention designs to provide an extensible book or hinder which issimple in construction and can be manufactured at a low cost.

The invention consists in the novel features hereinafter set forth andmore particularly defined by claim at the conclusion hereof.

In the drawings: Figure 1 is a perspective of'a loose-leaf ,bookembodying the invention. Fig.2 is a face view of the extensible back andthe adjustable connection between the sections thereof, parts beingshown in section. Fig. 3 is a plan of the parts shown in, Fig. 2, someparts being shovm in section. Fig. 4 is a'central longitudinal sec tionthrough theadjusting means. Fig. 5 is a perspective of the adjustingscrew and the,

keyfor operating the same. Fig. 6 is a detail of the reinforcingstripwhich secures the adjusting screw against longitudinal move ment inone of the backsections. I

Thebook or binder comprises s1des a and b I each of which is hinged orflexibly connected .as at 10, to one of the sections of the extensibleback. Said back comprises. a pair of an ular strips 0 and d the verticalportions c whereof are arranged to over-lap each Usually a covering 11of any suitable mate'- other to form a closed extensible back.

rial is provided for each of the backsections.

The side-walls or flanges of these sections.

' horizontal flange or wall of member 0 are secured as at f a pluralityof hollow posts or guides f in which the posts are ada ted to fit andslide. Theriveted ends f a o secure Specification of Letters Patent.

the back edges of the sheets.

I Patented March 24, root the strip 13 to said wall of member a. Theinner endsof'sald posts are tapered to facilitate passage'throughperforations in sheets g. A central tubular post it is securedto'themember (1 and said post is provided with an internal screw-threadh adapted to engage a screw-threaded post i which is revolubly connectedto the other member. The upper end of screwi extends through aperforation n the horizontal flan e of member c and is provided with anannu ar shoulder or flange 'i which fits in a socket or recess 12 formedin strip 13 which is also secured to member a by rivets 14. Screw rod iis provided with a socket 15 adapted to receive a suitable key or crank16" whereby the screw may be turned. Member c is provided with a keyopening 17 through which the key may be inserted into post i. Theflanges 71 of screw '5 is held in socket 15 and between strip 13 and thehorizontal wall of member .0 to

vhold the screw against longitudinal movement and so that it may beturned with respect to member 0. The inner endof tubular post it istapered to facilitate passage of the post through perforations in thesheets. The construction of the angular members is such that they may bemade of stout sheet.- metal. The reinforcing strips provide a sur facedevoid of projections and a double thickness of metal is provided at thepoints where the posts and tubes are secured to the clamping-members toform a firm attachment for the posts and tubes.

In use, the members can be disconnected to permit the sheets to beadjusted by rotating screw i. The posts and connections between themembers serve to maintain the parallel relation of the members and tosecure them against relative endwise shiftf By ad'- justing the screw ithe sheets. can be securely clamped and held between members 0 and d,the overlapping back-portions of said members serving to effectivelyclose. and protect The construction is a simple and durable one andentirely avoids the'use of projecting )arts. 1 Having thus described theinvention, what I claim as new and desireto secure by Letters Patent-is:

In a loose-leaf book or binder, the combination with a pair of angularmembers having sides and overlap ing back portions, and

interfitting posts an tubes respectively se-' cured to said members, ofa central tubular therein in which the flange of said screw isinternally screw-threaded post secured to revolubly held between saidstrip and said the side of one of the angular members, an angularmember.

adjusting screw Within said tubular post ALEXANDER 'WATTERS. 5 having aflange at its outer end, and a stnp W1tnesses:

fixed to the inner side of the other of said WILLIAM ALLEN,

angrflar members and having an outer socket EDGAR SHAFFUET.

